The control on adsorption kinetics and selectivity of formaldehyde in relation to different surface-modification approaches for microporous carbon bed systems

2021 ◽  
pp. 120178
Author(s):  
Won-Ki Kim ◽  
Sherif A. Younis ◽  
Ki-Hyun Kim
Keyword(s):  
Surface Modification ◽  
Adsorption Kinetics ◽  
Microporous Carbon

scholarly journals Adsorption and Adsorption Kinetics of the Vapours of Polar Substances on Microporous Carbon Adsorbents

2000 ◽  
Vol 18 (3) ◽  
pp. 205-234 ◽  
Author(s):  
Roman Wojsz
Keyword(s):  
Adsorption Isotherm ◽  
Adsorption Kinetics ◽  
Structural Heterogeneity ◽  
Polar Compounds ◽  
Microporous Carbon ◽  
Carbon Adsorbents ◽  
Isotherm Equations ◽  
Kinetics Of ◽  
Microporous Carbon Adsorbents ◽  
Association Of Molecules

The applicability of the Polanyi–Dubinin (PD) potential theory to the adsorption of the vapours of polar and non-polar compounds on to microporous carbon adsorbents has been evaluated. Expressions describing the changes in the fundamental thermodynamic functions resulting from the modified PD theory have been presented. These dependencies are related to the adsorption isotherm equations with the inclusion of parameters for both the structural heterogeneity and the association of molecules.

Adsorption Kinetics of Glycated Hemoglobin on Aptamer Microarrays with Antifouling Surface Modification

Langmuir ◽  
2021 ◽  
Author(s):  
Surachet Duanghathaipornsuk ◽  
Nathan G. F. Reaver ◽  
Brent D. Cameron ◽  
Dong-Shik Kim
Keyword(s):  
Surface Modification ◽  
Adsorption Kinetics ◽  
Glycated Hemoglobin ◽  
Kinetics Of

scholarly journals Design of Hybrid PAH Nanoadsorbents by Surface Functionalization of ZrO2 Nanoparticles with Phosphonic Acids

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 952
Author(s):  
Nadine Bou Orm ◽  
Thomas Gréa ◽  
Marwa Hamandi ◽  
Alexandre Lambert ◽  
Florent Lafay ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Surface Modification ◽  
Adsorption Kinetics ◽  
Surface Functionalization ◽  
Solid Phase ◽  
Nanocomposite Materials ◽  
Second Order ◽  
Order Kinetic ◽  
Phosphonic Acids ◽  
Pseudo Second Order

This study focuses on the preparation of innovative nanocomposite materials based on surface modification of commercial nano-ZrO2 optimized from Brønsted acid–base surface reactions. This surface modification was carried out by direct grafting of suitable phosphonic acids bearing a vinylic or phenylic substituent in aqueous solution. Different loading quantities of the anchoring organophosphorus compounds were applied for each materials synthesis. The resulting nanohybrids were thoroughly characterized by infrared spectroscopy (DRIFT), solid-state nuclear magnetic resonance (NMR), nitrogen adsorption-desorption (BET), thermogravimetric analysis (TG), and X-ray photoelectron spectroscopy (XPS), demonstrating the reliability and efficient tunability of the surface functionalization based on the starting Zr/P ratio. Our nanocomposite materials exhibited a high specific surface area as well as complex porosity networks with well-defined meso-pore. The as-prepared materials were investigated for the adsorption of a mixture of 16 polycyclic aromatic hydrocarbons (PAHs) at 200 ng·mL−1 in an aqueous solution. Adsorption kinetics experiments of each individual material were carried out on the prepared PAHs standard solution for a contact time of up to 6 h. Pretreatments of the adsorption test samples were performed by solid-phase extraction (SPE), and the resulting samples were analyzed using an ultrasensitive GC-orbitrap-MS system. The pseudo-first-order and the pseudo-second-order models were used to determine the kinetic data. The adsorption kinetics were best described and fitted by the pseudo-second-order kinetic model. The correlation between the nature of the substituent (vinylic or phenylic) and the parameters characterizing the adsorption process were found. In addition, an increase of PAHs adsorption rates with phosphonic acid loading was observed.

scholarly journals Enhanced capacitance characteristic of microporous carbon spheres through surface modification by oxygen-containing groups

2019 ◽  
Vol 15 ◽  
pp. 102586 ◽  
Author(s):  
Zhongguan Liang ◽  
Hui Xia ◽  
Hao Liu ◽  
Luomeng Zhang ◽  
Jianfei Zhou ◽  
...  
Keyword(s):  
Surface Modification ◽  
Microporous Carbon ◽  
Carbon Spheres
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